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科学史评话最新专辑

物种起源—正传:24.多姿多彩

11 Mar 2017

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达尔文观察到了一个有意思的现象,那就是在同等条件下,已婚者的死亡率低于未婚者。达尔文当时掌握的数据是同一个地区,同一个年龄段。未婚者的死亡率是已婚者的两倍。达尔文有两个办法来解释这一现象。1.婚姻本身可以导致死亡率下降。结婚以后两人互相扶持互相帮衬,恩恩爱爱,甜甜蜜蜜,白头偕老,比翼双飞……。幸福感使人身心健康,死亡率下降。婚姻是长寿的一个重要原因。2.剩男剩女们本身质量就不怎么样,都是在婚姻市场里面推销不出去的残次品。因此寿命短也是常理。在这个论断里面,短寿和结不了婚是一个原因导致的两个结果。……

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